Duan Gui

Duan Gui (?-189) was a eunuch of the Later Han and one of the Ten Eunuchs.

Biography
Duan Gui's position as an adviser to Emperor Ling of Han gave him great power, which he used unscrupulously to assassinate any who opposed him and committed many more atrocities. He temporarily sided with Grand Commander He Jin against the other eunuchs. However, he later assassinated He Jin and was attacked by Yuan Shao. He fled with Emperor Shao of Han and Liu Xie, but was killed.